Hydrothermal reaction between mixed ligand(1,2,4-triazole and benzoic acid) and Zn(NO3)2·6H2O afforded a three-dimensional(3D) metal-organic framework Zn3(C2H2N3)2(C7H5O2)4(C2H2N3=1,2,4-triazole,C7H5O2=benzoic acid).The compound was crystallized in the hexagonal system with space group R3:a=2.90234(9) nm,b=2.90234(9) nm,c=1.08597(5) nm,γ=120°,V=7.9222(5) nm3,Mr=816.68,Dc=1.541 g/cm3,Z=9,F(000)=3708,R=0.0636,and wR=0.1777.Its structure consists of ZnN2O2 tetrahedron and ZnN2O4 octahedron,which are connected by 1,2,4-triazole and benzoic acid ligands to form a 3D framework with helical units.This compound forms an inter-penetrated NbO topology.The compound was characterized by single-crystal X-ray diffraction,elemental analysis,FTIR spectra,and TGA measurements.
SONG Zhe LI Guang-hua YU Yang SHI Zhan FENG Shou-hua
